/// <summary>
/// Sorts the stops.
/// </summary>
public void Sort(Action <uint, uint> switchConnections)
{
if (_nextId > 0)
{ // sort stops, assume all stops are filled-in.
QuickSort.Sort((stop) =>
{
var latitude = StopsDb.DecodeSingle(_data[stop * SIZE + 0]);
var longitude = StopsDb.DecodeSingle(_data[stop * SIZE + 1]);
return(Itinero.Algorithms.Search.Hilbert.HilbertCurve.HilbertDistance(latitude, longitude,
HilbertExtensions.DefaultHilbertSteps));
},
(stop1, stop2) =>
{
var stop10 = _data[stop1 * SIZE + 0];
var stop11 = _data[stop1 * SIZE + 1];
var stop12 = _data[stop1 * SIZE + 2];
_data[stop1 * SIZE + 0] = _data[stop2 * SIZE + 0];
_data[stop1 * SIZE + 1] = _data[stop2 * SIZE + 1];
_data[stop1 * SIZE + 2] = _data[stop2 * SIZE + 2];
_data[stop2 * SIZE + 0] = stop10;
_data[stop2 * SIZE + 1] = stop11;
_data[stop2 * SIZE + 2] = stop12;
if (switchConnections != null)
{
switchConnections((uint)stop1, (uint)stop2);
}
}, 0, _nextId - 1);
}
}
/// <summary>
/// Creates a new transit db.
/// </summary>
public TransitDb()
{
_agencyAttributes = new AttributesIndex(AttributesIndexMode.ReverseStringIndex);
_connectionsDb = new ConnectionsDb();
_stopsDb = new StopsDb();
_stopAttributes = new AttributesIndex(AttributesIndexMode.ReverseStringIndex);
_tripsDb = new TripsDb();
_tripAttributes = new AttributesIndex(AttributesIndexMode.ReverseStringIndex);
_transfersDbs = new Dictionary <string, TransfersDb>();
_schedulesDb = new SchedulesDb();
_shapesDb = new ShapesDb();
}
/// <summary>
/// Deserializes from stream.
/// </summary>
public static TransitDb Deserialize(Stream stream)
{
var version = stream.ReadByte();
if (version > 2)
{
throw new Exception("Cannot deserialize db, version # doesn't match.");
}
// read agencies attributes.
var agencyAttributes = AttributesIndex.Deserialize(new LimitedStream(stream), true);
// read connections db.
var connectionsDb = ConnectionsDb.Deserialize(stream);
// read schedules db.
var schedulesDb = SchedulesDb.Deserialize(stream);
// read stop attributes.
var stopAttributes = AttributesIndex.Deserialize(new LimitedStream(stream), true);
// read stop db.
var stopsDb = StopsDb.Deserialize(stream);
// read transfer db's.
var transferDbsCount = stream.ReadByte();
var transferDbs = new Dictionary <string, TransfersDb>();
for (var i = 0; i < transferDbsCount; i++)
{
var profileName = stream.ReadWithSizeString();
var transferDb = TransfersDb.Deserialize(stream);
transferDbs.Add(profileName, transferDb);
}
// read trip attributes.
var tripAttributes = AttributesIndex.Deserialize(new LimitedStream(stream), true);
// write trips db.
var tripsDb = TripsDb.Deserialize(stream);
ShapesDb shapesDb = null;
if (version != 1)
{ // write shapes db.
shapesDb = ShapesDb.Deserialize(stream);
}
return(new TransitDb(agencyAttributes, connectionsDb, schedulesDb, stopAttributes, stopsDb, transferDbs,
tripAttributes, tripsDb, shapesDb));
}
/// <summary>
/// Creates a new transit db.
/// </summary>
private TransitDb(AttributesIndex agencyAttributes, ConnectionsDb connectionsDb, SchedulesDb schedulesDb, AttributesIndex stopAttributes,
StopsDb stopsDb, Dictionary <string, TransfersDb> transferDbs, AttributesIndex tripAttributes, TripsDb tripsDb, ShapesDb shapesDb)
{
_agencyAttributes = agencyAttributes;
_connectionsDb = connectionsDb;
_schedulesDb = schedulesDb;
_stopAttributes = stopAttributes;
_stopsDb = stopsDb;
_transfersDbs = transferDbs;
_tripAttributes = tripAttributes;
_tripsDb = tripsDb;
_shapesDb = shapesDb;
}
/// <summary>
/// Adds a new stop.
/// </summary>
public uint Add(float latitude, float longitude, uint metaId)
{
var id = _nextId;
_nextId++;
var size = _data.Length;
while ((id * SIZE + SIZE) > size)
{
size += BLOCK_SIZE;
}
if (size != _data.Length)
{
_data.Resize(size);
}
_data[id * SIZE + 0] = StopsDb.Encode(latitude);
_data[id * SIZE + 1] = StopsDb.Encode(longitude);
_data[id * SIZE + 2] = metaId;
return(id);
}
